Loading…
7
The tool crib guy in Wichita told me to quit running my face mill dry, and he was dead on
Was at a job shop in Wichita last month helping a buddy get his old Haas running, and the tool crib guy there watched me run a face mill dry on 4140 and just shook his head. He said he'd been watching inserts burn up for 22 years and nobody listens until they see the bill. I ran the next batch with coolant and got 40 more parts out of the same set of inserts before I had to index them. He didn't say much after that, just pointed at the chip pile and walked off. I know a lot of guys swear dry is faster on certain steels, and maybe on aluminum I'd agree, but on this 4140 it wasn't even close. Anyone else had a tool crib vet call them out on something and turned out dead right?
1 comments
Log in to join the discussion
Log In1 Comment
craig.sage12d ago
Did the old guy give you a number or just the head shake? Because that head shake from a tool crib vet is worth more than most of the setup sheets I've been handed over the years. Had the same thing happen on some 17-4 years back, guy told me I was pushing the speed too hard and I blew him off, then went through six inserts in an afternoon and ate crow the next morning. Turns out he'd been running that same part for a decade before I ever walked in the door. These guys don't always explain the why, they just know what the chip pile looks like when it's wrong.
3